package com.MusicWeb.servlet;

import com.MusicWeb.entity.Music;
import com.MusicWeb.service.UsermusicService;
import com.google.gson.Gson;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

@WebServlet("/userselectmusic")
//todo: 获取用户上传的音乐 管理员id则全部查询
//http://localhost:8080/userselectmusic?id=5
public class MusicUserUPServlet extends HttpServlet {
    UsermusicService usermusicService = new UsermusicService();

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        Integer id = Integer.parseInt(req.getParameter("id"));
        List<Music> res = null;
        if (id == 1) {
            res = usermusicService.SelectMusic();
        } else {
            res = usermusicService.UserMuiscColumn(id);
        }


        if (res != null) {
            // 设置返回的数据为json对象
            resp.setContentType("application/json;charset=utf-8");
            // 把实体转换为json，返回给前端
            String str = new Gson().toJson(res);
            resp.getWriter().print(str);
        }
    }
}
